Adanan bin Haji Mohd Yusof[a] (born 7 December 1952) is a Bruneian aristocrat, civil servant and politician who serve as a member of the Legislative Council of Brunei (LegCo) since 2023.

[5] He has two known brothers: Dato Paduka Alikhan, the private and confidential secretary to Crown Prince Al-Muhtadee Billah,[6] and Haji Rani, the acting commissioner of labour in the Ministry of Home Affairs (MoHA).

[12] In April, during a visit to Mukim Amo, he emphasised the importance of community cooperation, encouraged residents to embrace patriotism and unity to overcome challenges, and urged the reporting of suspicious activities.

[14] He continued to serve as deputy minister of home affairs and was appointed interim director of internal security on 25 May, following a directive from the sultan, replacing Jemat Ampal, who remained permanent secretary at PMO.

[17] Then, on 19 December, Adanan reiterated the need for public cooperation and vigilance in maintaining national security, urging the reporting of suspicious activities and unlawful behaviour, and emphasising that safeguarding peace and stability was a collective responsibility shared by all, not just law enforcement.

[22] On 19 November, senior representatives from MoHA accompanied Adanan on a Hari Raya tour of Kuala Belait communities, where they discussed neighborhood issues, shared ideas, and visited the houses of local leaders.

[25] On 4 November, Adanan officially opened the 'Sri Selera Suria' Complex in Seria, stressing the importance of traders adhering to regulations, particularly timely rent payments, and warning that failure to comply could result in the revocation of business licenses.

[28] As part of the 8th National Development Plan (RKN), he presided over the groundbreaking ceremony for a $54.1 million market in Kuala Belait on 12 April, with completion expected by 20 October.

[29] During Brunei's inaugural Workers' Day celebration on 5 May, Adanan addressed global workplace safety issues, citing ILO reports on occupational illnesses and accidents that cause millions of deaths and injuries annually.

[4] On 31 October, he visited the Belait District Office to review ongoing and completed infrastructure projects, underscoring the department's role in improving public welfare and rural development.

On 18 January 2010, Adanan highlighted that government agencies had implemented measures following the 2009 monsoon season, such as building flood retention ponds, dredging rivers, and improving infrastructure.

[39] In September 2011, at the APEC Dialogue in San Francisco, he highlighted Brunei's initiatives for comprehensive non-communicable disease (NCD) management and called for substantial investment in health innovation to address NCDs.

[40] Later, at the 2011 Heart Health Forum, Adanan underscored the importance of preventive measures such as balanced diets, regular exercise, healthier lifestyles, and quitting smoking to enhance well-being and productivity.

[56] During the 19th LegCo session on 4 March, he emphasised the importance of enhancing job seekers' skills, particularly among school dropouts, and called for strategic plans to support local MSMEs and increase exports through improved infrastructure and regulations.

[57] On 7 March, Adanan proposed that the Brunei Darussalam Central Bank take a more flexible approach, encouraging financial institutions to assist local businesses, including MSMEs, in securing loans for growth.

[61] On 10 March 2024, Amin Liew Abdullah outlined fiscal consolidation measures and initiatives to improve governance, financial reporting, and digital adoption among cooperatives to support economic diversification, in response to Adanan's concerns about the budget deficit.

[66][67] Later, on 23 October, at the 45th AIPA General Assembly, Adanan contributed to drafting resolutions on social issues, advocating for gender-responsive parliaments and promoting greater political engagement for women within ASEAN.

[74] On 24 April 2004, Adanan was honoured by Sultan Hassanal Bolkiah with the manteri title of Pehin Orang Kaya Johan Pahlawan, bearing the style Yang Dimuliakan.